71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
# Copyright 2014-2015 Canonical Limited.
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#
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# This file is part of charm-helpers.
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#
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# charm-helpers is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3 as
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# published by the Free Software Foundation.
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#
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# charm-helpers is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with charm-helpers. If not, see <http://www.gnu.org/licenses/>.
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import os
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from subprocess import check_call, CalledProcessError
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from charmhelpers.fetch import (
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BaseFetchHandler,
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UnhandledSource,
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filter_installed_packages,
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apt_install,
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)
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if filter_installed_packages(['git']) != []:
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apt_install(['git'])
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if filter_installed_packages(['git']) != []:
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raise NotImplementedError('Unable to install git')
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class GitUrlFetchHandler(BaseFetchHandler):
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"""Handler for git branches via generic and github URLs"""
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def can_handle(self, source):
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url_parts = self.parse_url(source)
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# TODO (mattyw) no support for ssh git@ yet
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if url_parts.scheme not in ('http', 'https', 'git', ''):
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return False
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elif not url_parts.scheme:
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return os.path.exists(os.path.join(source, '.git'))
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else:
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return True
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def clone(self, source, dest, branch="master", depth=None):
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if not self.can_handle(source):
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raise UnhandledSource("Cannot handle {}".format(source))
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if os.path.exists(dest):
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cmd = ['git', '-C', dest, 'pull', source, branch]
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else:
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cmd = ['git', 'clone', source, dest, '--branch', branch]
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if depth:
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cmd.extend(['--depth', depth])
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check_call(cmd)
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def install(self, source, branch="master", dest=None, depth=None):
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url_parts = self.parse_url(source)
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branch_name = url_parts.path.strip("/").split("/")[-1]
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if dest:
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dest_dir = os.path.join(dest, branch_name)
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else:
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dest_dir = os.path.join(os.environ.get('CHARM_DIR'), "fetched",
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branch_name)
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try:
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self.clone(source, dest_dir, branch, depth)
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except CalledProcessError as e:
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raise UnhandledSource(e)
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except OSError as e:
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raise UnhandledSource(e.strerror)
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return dest_dir
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